#!/usr/bin/env node
/**
 * qmem-sqlite — CLI per l'indice locale di pi-qmem (SQLite + FTS5).
 *
 * Uso:
 *   node scripts/qmem-sqlite.mjs status
 *   node scripts/qmem-sqlite.mjs import [--db FILE]
 *   node scripts/qmem-sqlite.mjs find "query" [--kind K] [--project P] [--scope S]
 *        [--top N] [--all] [--private] [--exact] [--json]
 *   node scripts/qmem-sqlite.mjs store --project P [--kind K] [--text "..."] [--queue-only]
 *   node scripts/qmem-sqlite.mjs queue [--status queued|synced|duplicate|failed]
 *   node scripts/qmem-sqlite.mjs flush [--limit N]
 *   node scripts/qmem-sqlite.mjs breaker [--reset]
 *   node scripts/qmem-sqlite.mjs enrich [--all] [--limit N] [--pace MS]
 *   node scripts/qmem-sqlite.mjs pull [--limit N]
 *
 * Il DB di default è ~/.local/share/pi-qmem/qmem.sqlite (override: --db,
 * env QMEM_SQLITE, oppure `localDbPath` in ~/.config/pi-qmem/config.json).
 */
// import dinamico: permette di sopprimere il warning MODULE_TYPELESS_PACKAGE_JSON
// (il package non dichiara "type":"module" per non cambiare la semantica del
// manifest pi) e di degradare con grazia se node:sqlite non è disponibile.
const originalEmitWarning = process.emitWarning;
process.emitWarning = (warning, ...rest) => {
	const code = rest[0]?.code ?? (typeof rest[0] === "string" ? rest[0] : undefined) ?? warning?.code;
	if (code === "MODULE_TYPELESS_PACKAGE_JSON") return;
	return originalEmitWarning.call(process, warning, ...rest);
};
const localDb = await import("../extensions/local-db.ts");
const { DEFAULT_DB_FILE, enrichFromGateway, flushQueue, importFromSessions, localDbPath, localDbReport, localSearch, pullFromGatewayExport, queueList, queueStats, queueStore, sessionRoots, submitOrQueue } = localDb;
const { breakerInfo, loadConfig, resetBreaker } = await import("../extensions/shared.ts");
process.emitWarning = originalEmitWarning;

const argv = process.argv.slice(2);
const cmd = argv[0] ?? "status";

function opt(name, fallback) {
	const i = argv.indexOf(`--${name}`);
	if (i === -1) return fallback;
	const v = argv[i + 1];
	return v && !v.startsWith("--") ? v : true;
}
const has = (name) => argv.includes(`--${name}`);
const dbFile = typeof opt("db", null) === "string" ? opt("db", null) : localDbPath(loadConfig());
const json = has("json");

function out(obj) {
	if (json) console.log(JSON.stringify(obj, null, 2));
	else console.log(obj);
}

if (cmd === "status") {
	const r = await localDbReport({ dbFile });
	if (json) {
		out(r);
	} else {
		console.log(`DB locale       : ${r.path}${r.exists ? "" : " (assente — esegui: import)"}`);
		if (r.exists) {
			console.log(`  dimensione    : ${r.sizeKb} KB`);
			console.log(`  record        : ${r.total} (${r.withText} con testo, ${r.active} attivi, ${r.superseded} superseduti, ${r.private} privati)`);
			console.log(`  con project_id: ${r.withProject}/${r.total}`);
			console.log(`  ultimo import : ${r.lastImport ?? "-"}   enrich: ${r.lastEnrich ?? "-"}   export: ${r.lastExport ?? "-"}   flush: ${r.lastFlush ?? "-"}`);
			if (r.queued || r.syncedQueue || r.failedQueue || r.duplicateQueue) {
				console.log(`  coda offline  : ${r.queued} in attesa, ${r.syncedQueue} sincronizzati, ${r.duplicateQueue} duplicati, ${r.failedQueue} falliti${r.oldestQueued ? ` (più vecchio: ${r.oldestQueued})` : ""}`);
				if (r.queueLastError) console.log(`  ultimo errore : ${r.queueLastError.slice(0, 120)}`);
			}
			if (r.pendingInIndex) console.log(`  in indice     : ${r.pendingInIndex} record marcati ⏳ (creati offline, non ancora sul gateway)`);
			if (r.deleted) console.log(`  tombstone     : ${r.deleted} record cancellati sul gateway (soft delete)`);
			{
				const br = breakerInfo();
				console.log(`  breaker       : ${br.open ? `APERTO (riprova tra ${Math.ceil(br.remainingMs / 1000)}s)` : "chiuso"} | fallimenti ${br.failures} | aperture ${br.trips}${br.lastError ? ` | ultimo errore: ${String(br.lastError).slice(0, 70)}` : ""}`);
			}
			console.log(`  top progetti  : ${r.topProjects.map((p) => `${p.project_id ?? "(null)"}=${p.n}`).join(", ") || "-"}`);
			if (r.duplicates.length) {
				console.log(`  possibili duplicati (testo identico): ${r.duplicates.length} gruppi — es. ${r.duplicates[0].ids.map((i) => i.slice(0, 8)).join(", ")}`);
			}
		}
	}
} else if (cmd === "import") {
	const roots = sessionRoots();
	const stats = await importFromSessions({ dbFile });
	const r = await localDbReport({ dbFile });
	if (json) out({ stats, report: r });
	else {
		console.log(`Import dalle sessioni (${roots.join(", ")})`);
		console.log(`  file letti    : ${stats.files} (${stats.lines} righe)`);
		console.log(`  eventi        : store=${stats.store} correct=${stats.correct} get=${stats.get} search_hit=${stats.searchHits} non_interpretati=${stats.unparsed}`);
		console.log(`  record unici  : ${stats.records} (scritti/aggiornati: ${stats.written})`);
		console.log(`  DB            : ${r.path} — ${r.total} record, ${r.sizeKb} KB, ${r.withText} con testo`);
		if (r.duplicates.length) console.log(`  duplicati     : ${r.duplicates.length} gruppi con testo identico`);
	}
} else if (cmd === "find") {
	const query = argv[1] && !argv[1].startsWith("--") ? argv[1] : "";
	if (!query) {
		console.error('Uso: find "query" [--kind K] [--project P] [--top N] [--all] [--deleted] [--exact] [--json]');
		process.exit(2);
	}
	const hits = await localSearch(
		{
			query,
			kind: typeof opt("kind", null) === "string" ? opt("kind", null) : undefined,
			project_id: typeof opt("project", null) === "string" ? opt("project", null) : undefined,
			scope: typeof opt("scope", null) === "string" ? opt("scope", null) : undefined,
			level: typeof opt("level", null) === "string" ? opt("level", null) : undefined,
			topic: typeof opt("topic", null) === "string" ? opt("topic", null) : undefined,
			include_superseded: has("all"),
			include_private: has("private"),
			include_deleted: has("deleted"),
			exact: has("exact"),
			top_k: Number(opt("top", 5)) || 5,
		},
		{ dbFile },
	);
	if (json) {
		out(hits);
	} else {
		if (!hits.length) console.log(`Nessun risultato locale per "${query}" (indice: ${dbFile}).`);
		hits.forEach((h, i) => {
			console.log(`${i + 1}. [${h.kind ?? "?"}/${h.scope ?? "?"}${h.project_id ? ` project=${h.project_id}` : ""} rank=${Number(h.rank).toFixed(2)}${h.superseded_by ? " superseduto" : ""}] ${h.snippet}`);
			console.log(`   (id: ${h.memory_id}, creato: ${h.created_at ?? "?"}, agente: ${h.agent_id ?? "?"}, fonti: ${h.sources ?? "?"})`);
		});
	}
} else if (cmd === "enrich") {
	const cfg = loadConfig();
	const stats = await enrichFromGateway(cfg, {
		dbFile,
		onlyIncomplete: !has("all"),
		limit: Number(opt("limit", 1000)) || 1000,
		paceMs: Number(opt("pace", 600)),
	});
	if (json) out(stats);
	else {
		console.log(`Arricchimento dal gateway (${cfg.url})`);
		console.log(`  richiesti: ${stats.requested}  ok: ${stats.ok}  falliti: ${stats.failed}  aggiornati: ${stats.updated}`);
		if (stats.errors.length) console.log(`  errori   : ${stats.errors.join(" | ")}`);
		if (stats.failed && !stats.ok) console.log("  (gateway non raggiungibile: riprova quando torna online)");
	}
} else if (cmd === "store") {
	// store con fallback offline: prova il gateway, altrimenti accoda
	const cfg = loadConfig();
	const text = typeof opt("text", null) === "string" ? opt("text", null) : fs.readFileSync(String(opt("file", "/dev/stdin")), "utf8").trim();
	const project = typeof opt("project", null) === "string" ? opt("project", null) : "";
	if (!text || !project) {
		console.error('Uso: store --project P [--kind K] [--scope S] [--text "..."] | --file FILE   [--queue-only]');
		process.exit(2);
	}
	const payload = {
		text,
		project_id: project,
		kind: typeof opt("kind", null) === "string" ? opt("kind", null) : "fact",
		scope: typeof opt("scope", null) === "string" ? opt("scope", null) : "agent",
		agent_id: typeof opt("agent", null) === "string" ? opt("agent", null) : undefined,
		topic: typeof opt("topic", null) === "string" ? opt("topic", null) : undefined,
	};
	if (has("queue-only")) {
		const q = await queueStore(payload, { dbFile });
		out(json ? q : `Accodato localmente: ${q.local_id} (in coda: ${q.queue_size})`);
	} else {
		const res = await submitOrQueue(cfg, payload, { dbFile });
		if (json) out(res);
		else if (res.queued) out(`Gateway non raggiungibile (HTTP ${res.status}): accodato localmente ${res.local_id} (in coda: ${res.queue_size}). Flush: qmem-sqlite flush`);
		else if (res.remote_id) out(`Salvato sul gateway: ${res.remote_id}`);
		else out(`Errore HTTP ${res.status}: ${JSON.stringify(res.data)}`);
	}
} else if (cmd === "queue") {
	const stats = await queueStats({ dbFile });
	const items = await queueList({ dbFile, status: typeof opt("status", null) === "string" ? opt("status", null) : undefined, limit: Number(opt("limit", 20)) || 20 });
	if (json) out({ stats, items });
	else {
		console.log(`Coda offline (${dbFile})`);
		console.log(`  in attesa: ${stats.queued}  sincronizzati: ${stats.synced}  duplicati: ${stats.duplicate}  falliti: ${stats.failed}`);
		if (stats.oldestQueued) console.log(`  più vecchio: ${stats.oldestQueued}`);
		if (stats.lastError) console.log(`  ultimo errore: ${stats.lastError.slice(0, 140)}`);
		items.forEach((q, i) => console.log(`  ${i + 1}. [${q.status}] ${q.local_id.slice(0, 8)} [${q.payload.kind ?? "fact"}/${q.payload.project_id}] ${String(q.payload.text).slice(0, 70)}`));
	}
} else if (cmd === "flush") {
	const cfg = loadConfig();
	const res = await flushQueue(cfg, { dbFile, limit: Number(opt("limit", 200)) || 200, paceMs: Number(opt("pace", 300)) });
	if (json) out(res);
	else {
		console.log(`Flush outbox verso ${cfg.url}`);
		console.log(`  sincronizzati: ${res.synced}  duplicati: ${res.duplicates}  falliti: ${res.failed}  ancora in coda: ${res.remaining}`);
		if (res.stopped) console.log(`  fermato: ${res.stopped}`);
		if (res.errors.length) console.log(`  errori: ${res.errors.join(" | ")}`);
	}
} else if (cmd === "breaker") {
	if (has("reset")) {
		const br = resetBreaker();
		out(json ? br : `Circuit breaker: chiuso (fallimenti ${br.failures})`);
	} else {
		const br = breakerInfo();
		if (json) out(br);
		else {
			console.log(`Circuit breaker qmem (${br.file})`);
			console.log(`  stato: ${br.open ? `APERTO — riprova tra ${Math.ceil(br.remainingMs / 1000)}s` : "chiuso"}`);
			console.log(`  fallimenti consecutivi: ${br.failures} | aperture totali: ${br.trips}`);
			if (br.lastError) console.log(`  ultimo errore: ${br.lastError}`);
			if (br.lastChange) console.log(`  ultimo cambio: ${br.lastChange}`);
			console.log("  reset: qmem-sqlite breaker --reset");
		}
	}
} else if (cmd === "pull") {
	const cfg = loadConfig();
	const res = await pullFromGatewayExport(cfg, { dbFile, limit: Number(opt("limit", 500)) || 500 });
	if (json) out(res);
	else {
		console.log(`Pull export dal gateway (${cfg.url})`);
		console.log(`  supportato: ${res.supported}  pagine: ${res.pages}  record: ${res.fetched}${res.message ? ` — ${res.message}` : ""}`);
	}
} else {
	console.error(`Comando sconosciuto: ${cmd}\nComandi: status | import | find | store | queue | flush | breaker | enrich | pull`);
	process.exit(2);
}

void DEFAULT_DB_FILE;